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SERVICE MANUAL
Note keys
Pads
Knobs
Switches
Inputs / Outputs
Power
Dimensions
( w i d t h x d e p t h x h e i g h t )
Weight
SPECIFICATIONS
25 keys; velocity-sensitive; 10-octave range with octave up/down
buttons or transposition
8 8 8 8 pads; velocity- and pressure-sensitive; 4 4 4 4 banks
8 8 8 8 360o encoders; 3 3 3 3 banks
4 4 4 4 switches; LED-backlit; 3 3 3 3 banks
1 1 1 1 USB port
1 1 1 1 1/4" (6.35mm) TRS expression pedal input
1 1 1 1 1/4" (6.35mm) TS sustain pedal or footswitch input
1 1 1 1 5-pin MIDI in
1 1 1 1 5-pin MIDI out
via computer USB bus or USB charger (sold separately)
via power adapter (sold separately): 6V DC, 1A, center-positive
19.25" x 11.75" x 3.63"
48.9 cm x 29.8 cm x 9.2 cm
6.09 lbs.
2.76 kg
MODEL:MPK225
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Summary of Contents for Akai MPK225
- Page 1 SERVICE MANUAL MODEL:MPK225 SPECIFICATIONS 25 keys; velocity-sensitive; 10-octave range with octave up/down Note keys buttons or transposition 8 8 8 8 pads; velocity- and pressure-sensitive; 4 4 4 4 banks Pads 8 8 8 8 360o encoders; 3 3 3 3 banks Knobs 4 4 4 4 switches;...
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Page 2: Disassembly Procedures
T e c h n i c a l S p e c i f i c a t i o n T e c h n i c a l S p e c i f i c a t i o n T e c h n i c a l S p e c i f i c a t i o n T e c h n i c a l S p e c i f i c a t i o n DISASSEMBLY PROCEDURES... - Page 3 3.DISASSEMBLE THE TOP RIGHT FRONT PCB ASS’Y.(Fig.3) (A) REMOVE 9 KNOBS. (B) REMOVE 8 NUTS AND 8 WASHERS. (C) REMOVE 8 SCREWS FROM THE TOP RIGHT FRONT PCB ASS’Y. (Fig.3) 4.DISASSEMBLE THE SWITCH PCB ASS’Y.(Fig.4) (A) REMOVE 3 SCREWS FROM THE TOP LEFT FRONT PCB ASS’Y (Fig.4)
- Page 4 5.DISASSEMBLE THE FSR PCB. (Fig.5) (A) REMOVE 7 SCREWS FROM THE FSR PCB. (Fig.5) 6.DISASSEMBLE THE PITCH/MOD PCB ASS’Y. (Fig.6) (A) REMOVE 4 SCREWS FROM THE PITCH/MOD PCB ASS’Y. (Fig.6)
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Page 5: Wiring Diagram
WIRING DIAGRAM (US/AUS) SEQUENCE NO OF EXPLODE DIAGRAM WILL BE MARKED ON REF. COLUMN OF BOM LIST... -
Page 6: Packing Diagram
PACKING DIAGRAM (US) - Page 7 PACKING DIAGRAM (AUS)
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Page 8: Explode Diagram
EXPLODE DIAGRAM (US/AUS) - Page 9 AD2AAKA11 DESCRIPTION LEVEL AD2AAKA11 MPK225 25Key Keyboard Controller BAGL-55A CABLE CLIP 55L CN0100000503 Flat Cable GND Wire Black Length 50mm Line/Female CN1620003001 Flat Cable 16pin 300mm Female/Female EVA1504460 FFC1410001501 FFC 14P Pitch:1.0mm Length:150mm FFC1610001001 CONNECTOR FFC2610002001 Connector 26P 200mm Pitch:1mm...
- Page 10 RU151062301 Rubber Knob RU1530602 RUBBER FOOT SC0208RBCI SCREW M2X8 PPC TAPPING SC0308RBNI Screw M3X8 PRN Tapping SC0310BIBI SCREW M3X10 PBB SC0310RBBI Screw M3X10 PPB Tapping SC0312RBNI Screw M3X12 PRN Tapping TW25701AYAH0101 Keyboard Assembly(YH 25KEY) BAGL-55A CABLE CLIP 55L CN0225403601 Flat Cable 2Pin Pitch 2.54mm Single Row Length 360mm Female Header/Pin Header CN1625403901 Flat Cable Type 8P*2 Pitch 2.54mm Dual...
- Page 11 ICSTM32F100C4T6 IC STM32F100C4T6B LQFP-48 (U7) ICYH103M04 IC(STM32F103VCT6+Program)LQFP-100 ICSTM32F103VCT6 IC STM32F103VCT6 LQFP-100 (U12) JKDJ-0702B-020 DC Base 2.0MM PC13A009 Main PCB 4Layer FR-4 140*75MM PT1304702 PLATE (J5) RS000010J03 RES 0 5% SMD 0603 R2~5,13,26,32~35,62,73,79,80,85,94,97 R98,100,105 RS000110J03 RES 1 5% SMD 0603 RS001K10F03 RES 1K 1% SMD 0603 R15,28~30,38,39,69,71 RS002210F03...
- Page 12 PC13A013 FSR PCB 2-Layer FR-4 150*81MM RS004710F03 RES 47 1% SMD 0603 R160,186 RS010K10F03 RES 10K 1% SMD 0603 R220,224,228,232 RS012K10F03 RES 12K 1% SMD 0603 R218,222,226,230 RS022110F03 RES 221 1% SMD 0603 R146,147,149,150,152,153,155,156,158,185 R188,189,191,192,194,195 RS043210F03 RES 432 1% SMD 0603 R145,148,151,154,157,187,190,193 RS047010F03 RES 470 1% SMD 0603...
- Page 13 TE612000301 Pin Header 180° Pitch:2.00mm Single Row 3P DIP VRR50202901 Potentiometer Rotary Volume:5k Shaft Length 293mm Single Row TWPC13A014C01 Pitch&MOD PCB Assembly TE612000301 Pin Header 180° Pitch:2.00mm Single Row 3P DIP VRR50202901 Potentiometer Rotary Volume:5k Shaft Length 293mm Single Row TWPC13A014D01 Switch PCB Assembly CN0620001508...
- Page 15 ! "...
- Page 16 3 7 (& .& & 55 . ! < , . . ! 7 &...
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- Page 18 % # # > $ ?! , 89 , ! . &...
- Page 19 " # $ 1 55 . 55 56 55 7' ! 55 7' ! ...
- Page 20 "( 89 ! ) 89 ; 89 2 89 ) 89 5 , . ! ' .
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- Page 22 ,# % & & ! - % & , .
- Page 23 - 1 < / ! - , & ' 5 .
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- Page 26 ". 5 , . 8* & ! <...
- Page 27 - 3 & , ' 5 . 3 . / /! / / ( 6 !
- Page 28 . / & 0 - , , @ / ! 5 . &...
- Page 29 2.32k 1% 0.1uF FOOTSWITCH +3V3 FOOTSWITCH BAV99 0.1uF +3V3 0.1uF JACK 6.4mm +3V3 +3V3 FS2_DETECT Copyright FOOTSWITCH2 FOOTSWITCH2 COMPANY: AKAI R200 TITLE: TITLE_MAIN C201 D200 R201 C200 BAV99 0 ohm 0.1uF ANALOG 0.1uF +3V3 JACK 6.4mm PART NUMBER: PART_NUMBER REV:...
- Page 30 KBD_COL9 +3V3 KBD_COL10 POWER MANAGEMENT MBT4403 MBT4401 RESET R110 100k MBT4401 R115 BACKLIGHT_ON BACKLIGHT_OFF BACKLIGHT_EN 74HC02 Copyright 74HC02 COMPANY: AKAI +3V3 +3V3 TP10 LED_OFF LED_EN 74HC02 TITLE: 74HC02 TITLE_MAIN 74HC02 MOUNTING LED_ON 0.1uF HOLES MICRO & FPGA R105 0 ohm...
- Page 31 LM393 475 ohm 1% 1.1k 1% Locate close to USB input USB CONNECT Copyright 0 ohm 1.5K COMPANY: AKAI +VBUS +3V3 USB- USB+ TITLE: CHARGING PORT DETECTION TITLE_MAIN LM393 VDP_SRC shall be able to source at least 250uA when D+ is between 0.5 and 0.7.
- Page 32 PADLEDS22 R194 221 ohm 1% R195 221 ohm 1% 0.1uF PADLEDS23 GND_LED_L LED107 GND_LED_L 10uF GND_LED_L Copyright (c) 2013 Akai Professional COMPANY: AKAI TITLE: AD2A Top Panel LEFT PCB - Pad Leds PART NUMBER: PART_NUMBER ASSY NUMBER: ASSEMBLY_NUMBER DRAWN: DATED:...
- Page 33 PAD_RETURN0_L 0.1uF PAD_RETURN1_L PAD_RETURN2_L PAD_RETURN3_L SCAN1_L SCAN0_L GND_L PADS_LEDS_OUT_L LED_ENABLE_L LOAD_LEDS_L SHIFT_LEDS_L GND_L GND_LED_L Copyright (c) 2013 Akai Professional COMPANY: AKAI TITLE: AD2A Top Panel LEFT PCB - Pads PART NUMBER: PART_NUMBER ASSY NUMBER: ASSEMBLY_NUMBER DRAWN: DATED: #NAME? DRAWN_BY_1 FILENAME:...
- Page 34 Rotary7 ANALOG_SELECT1 ANALOG_SELECT2 +3V3 0.1uF OUT/IN ANALOG1 Rotary8 Rotary4 1000pF 74HC4051 ANALOG_SELECT0 ANALOG_SELECT1 ANALOG_SELECT2 Copyright (c) 2013 Akai Professional COMPANY: AKAI TITLE: AD2A Top Panel RIGHT PCB - ANALOG PART NUMBER: PART_NUMBER ASSY NUMBER: ASSEMBLY_NUMBER DRAWN: DATED: #NAME? DRAWN_BY_1 FILENAME:...
- Page 35 DATA7 EXT0 EXT1 EXT2 LCD CONTRAST EXT3 EXT4 LOAD_BUTTONS LOAD_LEDS SHIFT_CLK MBT4403 DATA0 BUTTONS_IN MAIN DATA1 LEDS_OUT DATA2 Copyright (c) 2013 Akai Professional LED_ENABLE BACKLIGHT DATA3 LCD_E R243 DATA4 LCD_RW DATA5 4.75k 1% COMPANY: LCD_RS DATA6 0.1uF AKAI LCD_CONTRAST_DC DATA7...
- Page 36 SCLK LEDS7 74HC595 47 ohm PADS_LEDS_OUT 0.1uF GND_LED GND_LED LEDS[0..21] SHIFT_CLK U22E SHIFT_BUTTONS1 74AHC04 U22D SHIFT_LEDS Copyright (c) 2013 Akai Professional 74AHC04 COMPANY: AKAI TITLE: board RIGHT PCB - LEDS PART NUMBER: PART_NUMBER ASSY NUMBER: ASSEMBLY_NUMBER DRAWN: DATED: #NAME? DRAWN_BY_1...
- Page 37 PAD BANK B SW10 PAD BANK C SW11 PAD BANK D SW12 FULL LEVEL ANALOG_TOP. PITCH_POT. MOD_POT. S6B-PH-KL(LF)(SN) GND. PITCH Copyright (c) 2013 Akai Professional COMPANY: AKAI TITLE: AD2A Top Panel LEFT PCB PART NUMBER: PART_NUMBER ASSY NUMBER: ASSEMBLY_NUMBER DRAWN: DATED: #NAME?
- Page 38 EXT1 EXT2 EXT3 C1001 C1000 EXT4 +3V3 0 ohm 0 ohm Identifier EXT3 EXT4 Do Not Stuff 0.1uF AD2A Copyright (c) 2013 Akai Professional 47 ohm COMPANY: AKAI BTNS_24 SER_OUT BTNS_25 SER_OUT BTNS_26 BTNS_27 TITLE: BTNS_28 BTNS_29 board BTNS_30 74HC165...
- Page 39 Comment Description Designator Footprint LibRef Quantity C1, C3, C6, C19, C20, 1_56_0106 C1206 1_56_0106 C75, C76, C77, C78, C79 C5, C7, C8, C15, C16, C17, C18, C21, C23, C24, C25, C26, C27, C28, C29, C30, C31, C32, C33, C34, C35, C36, C37, C38, C39, C40, C41, C43, C44, C45, C66, C67, C69,...
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